TP-Link TL-SG2424 User Manual page 71

Figure 5-19 DHCP Cheating Attack Implementation Procedure
DHCP Filtering feature allows only the trusted ports to forward DHCP packets and thereby
ensures that users get proper IP addresses. DHCP Filtering is to monitor the process of hosts
obtaining the IP addresses from DHCP servers, and record the IP address, MAC address, VLAN
and the connected Port number of the Host for automatic binding. DHCP Filtering feature prevents
the network from the DHCP Server Cheating Attack by discarding the DHCP packets on the
distrusted port, so as to enhance the network security.
Choose the menu Switching → DHCP Filtering to load the following page.
The following entries are displayed on this screen
DHCP Filtering

DHCP Filtering:
Trusted Port

Here you can select the desired port(s) to be Trusted Port(s). Only the Trusted Port(s) can
receive DHCP packets from DHCP Servers. Click All button to select all ports. Click Clear
button to select none.
Figure 5-20 DHCP Filtering
:
Enable/Disable the DHCP Filtering function globally.
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